Home / 6,860.70-10,278.09-3,930.12

Finding the Fourth Proportional to 6,860.70, 10,278.09 and 3,930.12

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Solution

The fourth proportional to 6,860.70, 10,278.09 and 3,930.12 is: 5,887.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,860.70 : 10,278.09 = 3,930.12 : x
  2. Step 2: Convert to fraction form
    6,860.70/10,278.09 = 3,930.12/x
  3. Step 3: Cross multiply
    6,860.70x = 10,278.09 × 3,930.12
  4. Step 4: Simplify right side
    6,860.70x = 40,394,127.07
  5. Step 5: Solve for x
    x = 40,394,127.07/6,860.70
  6. Step 6: Final answer
    x = 5,887.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.